Nuclear Shape Transitions and Some Properties of Aligned-Particle Configurations at Very High Spin in Some Rare-Earth Nuclei

We will present results on an collective ΔI = 2 ground band level sequence in the spherical six-valence-particle nucleus ¹⁵²Dy and the variation of shapes for nuclei in the N = 88 to 92 transitional region. Finally, we will present results for some even-even nuclei without any backbending behaviour, showed a clear backbending in the diagram of 2??/?² versus (?ω)².